mvnw

#!/bin/sh
# ----------------------------------------------------------------------------
# Licensed to the Apache Software Foundation (ASF) under one
# or more contributor license agreements.  See the NOTICE file
# distributed with this work for additional information
# regarding copyright ownership.  The ASF licenses this file
# to you under the Apache License, Version 2.0 (the
# "License"); you may not use this file except in compliance
# with the License.  You may obtain a copy of the License at
#
#    http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing,
# software distributed under the License is distributed on an
# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
# KIND, either express or implied.  See the License for the
# specific language governing permissions and limitations
# under the License.
# ----------------------------------------------------------------------------

# ----------------------------------------------------------------------------
# Apache Maven Wrapper startup batch script, version 3.3.2
#
# Optional ENV vars
# -----------------
#   JAVA_HOME - location of a JDK home dir, required when download maven via java source
#   MVNW_REPOURL - repo url base for downloading maven distribution
#   MVNW_USERNAME/MVNW_PASSWORD - user and password for downloading maven
#   MVNW_VERBOSE - true: enable verbose log; debug: trace the mvnw script; others: silence the output
# ----------------------------------------------------------------------------

set -euf
[ "${MVNW_VERBOSE-}" != debug ] || set -x

# OS specific support.
native_path() { printf %s\\n "$1"; }
case "$(uname)" in
CYGWIN* | MINGW*)
	[ -z "${JAVA_HOME-}" ] || JAVA_HOME="$(cygpath --unix "$JAVA_HOME")"
	native_path() { cygpath --path --windows "$1"; }
	;;
esac

# set JAVACMD and JAVACCMD
set_java_home() {
	# For Cygwin and MinGW, ensure paths are in Unix format before anything is touched
	if [ -n "${JAVA_HOME-}" ]; then
		if [ -x "$JAVA_HOME/jre/sh/java" ]; then
			# IBM's JDK on AIX uses strange locations for the executables
			JAVACMD="$JAVA_HOME/jre/sh/java"
			JAVACCMD="$JAVA_HOME/jre/sh/javac"
		else
			JAVACMD="$JAVA_HOME/bin/java"
			JAVACCMD="$JAVA_HOME/bin/javac"

			if [ ! -x "$JAVACMD" ] || [ ! -x "$JAVACCMD" ]; then
				echo "The JAVA_HOME environment variable is not defined correctly, so mvnw cannot run." >&2
				echo "JAVA_HOME is set to \"$JAVA_HOME\", but \"\$JAVA_HOME/bin/java\" or \"\$JAVA_HOME/bin/javac\" does not exist." >&2
				return 1
			fi
		fi
	else
		JAVACMD="$(
			'set' +e
			'unset' -f command 2>/dev/null
			'command' -v java
		)" || :
		JAVACCMD="$(
			'set' +e
			'unset' -f command 2>/dev/null
			'command' -v javac
		)" || :

		if [ ! -x "${JAVACMD-}" ] || [ ! -x "${JAVACCMD-}" ]; then
			echo "The java/javac command does not exist in PATH nor is JAVA_HOME set, so mvnw cannot run." >&2
			return 1
		fi
	fi
}

# hash string like Java String::hashCode
hash_string() {
	str="${1:-}" h=0
	while [ -n "$str" ]; do
		char="${str%"${str#?}"}"
		h=$(((h * 31 + $(LC_CTYPE=C printf %d "'$char")) % 4294967296))
		str="${str#?}"
	done
	printf %x\\n $h
}

verbose() { :; }
[ "${MVNW_VERBOSE-}" != true ] || verbose() { printf %s\\n "${1-}"; }

die() {
	printf %s\\n "$1" >&2
	exit 1
}

trim() {
	# MWRAPPER-139:
	#   Trims trailing and leading whitespace, carriage returns, tabs, and linefeeds.
	#   Needed for removing poorly interpreted newline sequences when running in more
	#   exotic environments such as mingw bash on Windows.
	printf "%s" "${1}" | tr -d '[:space:]'
}

# parse distributionUrl and optional distributionSha256Sum, requires .mvn/wrapper/maven-wrapper.properties
while IFS="=" read -r key value; do
	case "${key-}" in
	distributionUrl) distributionUrl=$(trim "${value-}") ;;
	distributionSha256Sum) distributionSha256Sum=$(trim "${value-}") ;;
	esac
done <"${0%/*}/.mvn/wrapper/maven-wrapper.properties"
[ -n "${distributionUrl-}" ] || die "cannot read distributionUrl property in ${0%/*}/.mvn/wrapper/maven-wrapper.properties"

case "${distributionUrl##*/}" in
maven-mvnd-*bin.*)
	MVN_CMD=mvnd.sh _MVNW_REPO_PATTERN=/maven/mvnd/
	case "${PROCESSOR_ARCHITECTURE-}${PROCESSOR_ARCHITEW6432-}:$(uname -a)" in
	*AMD64:CYGWIN* | *AMD64:MINGW*) distributionPlatform=windows-amd64 ;;
	:Darwin*x86_64) distributionPlatform=darwin-amd64 ;;
	:Darwin*arm64) distributionPlatform=darwin-aarch64 ;;
	:Linux*x86_64*) distributionPlatform=linux-amd64 ;;
	*)
		echo "Cannot detect native platform for mvnd on $(uname)-$(uname -m), use pure java version" >&2
		distributionPlatform=linux-amd64
		;;
	esac
	distributionUrl="${distributionUrl%-bin.*}-$distributionPlatform.zip"
	;;
maven-mvnd-*) MVN_CMD=mvnd.sh _MVNW_REPO_PATTERN=/maven/mvnd/ ;;
*) MVN_CMD="mvn${0##*/mvnw}" _MVNW_REPO_PATTERN=/org/apache/maven/ ;;
esac

# apply MVNW_REPOURL and calculate MAVEN_HOME
# maven home pattern: ~/.m2/wrapper/dists/{apache-maven-<version>,maven-mvnd-<version>-<platform>}/<hash>
[ -z "${MVNW_REPOURL-}" ] || distributionUrl="$MVNW_REPOURL$_MVNW_REPO_PATTERN${distributionUrl#*"$_MVNW_REPO_PATTERN"}"
distributionUrlName="${distributionUrl##*/}"
distributionUrlNameMain="${distributionUrlName%.*}"
distributionUrlNameMain="${distributionUrlNameMain%-bin}"
MAVEN_USER_HOME="${MAVEN_USER_HOME:-${HOME}/.m2}"
MAVEN_HOME="${MAVEN_USER_HOME}/wrapper/dists/${distributionUrlNameMain-}/$(hash_string "$distributionUrl")"

exec_maven() {
	unset MVNW_VERBOSE MVNW_USERNAME MVNW_PASSWORD MVNW_REPOURL || :
	exec "$MAVEN_HOME/bin/$MVN_CMD" "$@" || die "cannot exec $MAVEN_HOME/bin/$MVN_CMD"
}

if [ -d "$MAVEN_HOME" ]; then
	verbose "found existing MAVEN_HOME at $MAVEN_HOME"
	exec_maven "$@"
fi

case "${distributionUrl-}" in
*?-bin.zip | *?maven-mvnd-?*-?*.zip) ;;
*) die "distributionUrl is not valid, must match *-bin.zip or maven-mvnd-*.zip, but found '${distributionUrl-}'" ;;
esac

# prepare tmp dir
if TMP_DOWNLOAD_DIR="$(mktemp -d)" && [ -d "$TMP_DOWNLOAD_DIR" ]; then
	clean() { rm -rf -- "$TMP_DOWNLOAD_DIR"; }
	trap clean HUP INT TERM EXIT
else
	die "cannot create temp dir"
fi

mkdir -p -- "${MAVEN_HOME%/*}"

# Download and Install Apache Maven
verbose "Couldn't find MAVEN_HOME, downloading and installing it ..."
verbose "Downloading from: $distributionUrl"
verbose "Downloading to: $TMP_DOWNLOAD_DIR/$distributionUrlName"

# select .zip or .tar.gz
if ! command -v unzip >/dev/null; then
	distributionUrl="${distributionUrl%.zip}.tar.gz"
	distributionUrlName="${distributionUrl##*/}"
fi

# verbose opt
__MVNW_QUIET_WGET=--quiet __MVNW_QUIET_CURL=--silent __MVNW_QUIET_UNZIP=-q __MVNW_QUIET_TAR=''
[ "${MVNW_VERBOSE-}" != true ] || __MVNW_QUIET_WGET='' __MVNW_QUIET_CURL='' __MVNW_QUIET_UNZIP='' __MVNW_QUIET_TAR=v

# normalize http auth
case "${MVNW_PASSWORD:+has-password}" in
'') MVNW_USERNAME='' MVNW_PASSWORD='' ;;
has-password) [ -n "${MVNW_USERNAME-}" ] || MVNW_USERNAME='' MVNW_PASSWORD='' ;;
esac

if [ -z "${MVNW_USERNAME-}" ] && command -v wget >/dev/null; then
	verbose "Found wget ... using wget"
	wget ${__MVNW_QUIET_WGET:+"$__MVNW_QUIET_WGET"} "$distributionUrl" -O "$TMP_DOWNLOAD_DIR/$distributionUrlName" || die "wget: Failed to fetch $distributionUrl"
elif [ -z "${MVNW_USERNAME-}" ] && command -v curl >/dev/null; then
	verbose "Found curl ... using curl"
	curl ${__MVNW_QUIET_CURL:+"$__MVNW_QUIET_CURL"} -f -L -o "$TMP_DOWNLOAD_DIR/$distributionUrlName" "$distributionUrl" || die "curl: Failed to fetch $distributionUrl"
elif set_java_home; then
	verbose "Falling back to use Java to download"
	javaSource="$TMP_DOWNLOAD_DIR/Downloader.java"
	targetZip="$TMP_DOWNLOAD_DIR/$distributionUrlName"
	cat >"$javaSource" <<-END
		public class Downloader extends java.net.Authenticator
		{
		  protected java.net.PasswordAuthentication getPasswordAuthentication()
		  {
		    return new java.net.PasswordAuthentication( System.getenv( "MVNW_USERNAME" ), System.getenv( "MVNW_PASSWORD" ).toCharArray() );
		  }
		  public static void main( String[] args ) throws Exception
		  {
		    setDefault( new Downloader() );
		    java.nio.file.Files.copy( java.net.URI.create( args[0] ).toURL().openStream(), java.nio.file.Paths.get( args[1] ).toAbsolutePath().normalize() );
		  }
		}
	END
	# For Cygwin/MinGW, switch paths to Windows format before running javac and java
	verbose " - Compiling Downloader.java ..."
	"$(native_path "$JAVACCMD")" "$(native_path "$javaSource")" || die "Failed to compile Downloader.java"
	verbose " - Running Downloader.java ..."
	"$(native_path "$JAVACMD")" -cp "$(native_path "$TMP_DOWNLOAD_DIR")" Downloader "$distributionUrl" "$(native_path "$targetZip")"
fi

# If specified, validate the SHA-256 sum of the Maven distribution zip file
if [ -n "${distributionSha256Sum-}" ]; then
	distributionSha256Result=false
	if [ "$MVN_CMD" = mvnd.sh ]; then
		echo "Checksum validation is not supported for maven-mvnd." >&2
		echo "Please disable validation by removing 'distributionSha256Sum' from your maven-wrapper.properties." >&2
		exit 1
	elif command -v sha256sum >/dev/null; then
		if echo "$distributionSha256Sum  $TMP_DOWNLOAD_DIR/$distributionUrlName" | sha256sum -c >/dev/null 2>&1; then
			distributionSha256Result=true
		fi
	elif command -v shasum >/dev/null; then
		if echo "$distributionSha256Sum  $TMP_DOWNLOAD_DIR/$distributionUrlName" | shasum -a 256 -c >/dev/null 2>&1; then
			distributionSha256Result=true
		fi
	else
		echo "Checksum validation was requested but neither 'sha256sum' or 'shasum' are available." >&2
		echo "Please install either command, or disable validation by removing 'distributionSha256Sum' from your maven-wrapper.properties." >&2
		exit 1
	fi
	if [ $distributionSha256Result = false ]; then
		echo "Error: Failed to validate Maven distribution SHA-256, your Maven distribution might be compromised." >&2
		echo "If you updated your Maven version, you need to update the specified distributionSha256Sum property." >&2
		exit 1
	fi
fi

# unzip and move
if command -v unzip >/dev/null; then
	unzip ${__MVNW_QUIET_UNZIP:+"$__MVNW_QUIET_UNZIP"} "$TMP_DOWNLOAD_DIR/$distributionUrlName" -d "$TMP_DOWNLOAD_DIR" || die "failed to unzip"
else
	tar xzf${__MVNW_QUIET_TAR:+"$__MVNW_QUIET_TAR"} "$TMP_DOWNLOAD_DIR/$distributionUrlName" -C "$TMP_DOWNLOAD_DIR" || die "failed to untar"
fi
printf %s\\n "$distributionUrl" >"$TMP_DOWNLOAD_DIR/$distributionUrlNameMain/mvnw.url"
mv -- "$TMP_DOWNLOAD_DIR/$distributionUrlNameMain" "$MAVEN_HOME" || [ -d "$MAVEN_HOME" ] || die "fail to move MAVEN_HOME"

clean || :
exec_maven "$@"